!! the phoenix law !!
Member level 1
Hello there,
This is my first post here so excuse me if it were not the correct section to discuss what i am going to ask for, anyway, i have the following problem:
I am asked to design a RF power harvesting circuit on PCB board to provide a 1.8v supply with current capability up to 500uA, ripples should be as low as possible, the settling time should be as minimum as possible,
The input is an RF signal with 13.56MHz and peak to peak voltage 100mv, the whole circuit is simply as following: coil antenna->matching circuit->voltage doublers->LDO
later i should include a backscattering block to transmit binary data to the reader
Allright, this was a general description to make everything clear, now i have few questions:
1-which is the best tool to use (the tool should perform both simulations and PCB layout)? i have already started using altium designer but is it good enough? my opinion: yes it is untill now, but i want some professional to advise me
2-I need a discrete 4-terminal mosfet (the usual source, drain, gate and one more connection for substrate however at the worst case a 3-terminal mosfet would be accepted) with low threshold, low parasitics, low on resistance and high current capability, actually this is my biggest problem, i don't have any idea where or how to search for one with these requirement,
hence i would be very grateful if you suggested any part number for this particular mosfet
3-After step 2 (choosing the Tr) i need to find a spice model (with any level but as better as much approved), umm moreover is there anyway to find models for cadence?
4-What is the difference between LDO and normal regulators ?
5- what is back scattering?
Finally, if you have any useful information related to the project i would be very grateful if you informed me, though THE PART NUMBER is the highest priority to me right now
Thanks in advance
This is my first post here so excuse me if it were not the correct section to discuss what i am going to ask for, anyway, i have the following problem:
I am asked to design a RF power harvesting circuit on PCB board to provide a 1.8v supply with current capability up to 500uA, ripples should be as low as possible, the settling time should be as minimum as possible,
The input is an RF signal with 13.56MHz and peak to peak voltage 100mv, the whole circuit is simply as following: coil antenna->matching circuit->voltage doublers->LDO
later i should include a backscattering block to transmit binary data to the reader
Allright, this was a general description to make everything clear, now i have few questions:
1-which is the best tool to use (the tool should perform both simulations and PCB layout)? i have already started using altium designer but is it good enough? my opinion: yes it is untill now, but i want some professional to advise me
2-I need a discrete 4-terminal mosfet (the usual source, drain, gate and one more connection for substrate however at the worst case a 3-terminal mosfet would be accepted) with low threshold, low parasitics, low on resistance and high current capability, actually this is my biggest problem, i don't have any idea where or how to search for one with these requirement,
hence i would be very grateful if you suggested any part number for this particular mosfet
3-After step 2 (choosing the Tr) i need to find a spice model (with any level but as better as much approved), umm moreover is there anyway to find models for cadence?
4-What is the difference between LDO and normal regulators ?
5- what is back scattering?
Finally, if you have any useful information related to the project i would be very grateful if you informed me, though THE PART NUMBER is the highest priority to me right now
Thanks in advance